- Optimal cut-off points of hemoglobin A2 used for thalassemia.
| Cut-off points | Males | Non pregnant women | Pregnant women | Overall |
|---|---|---|---|---|
| Percentages | ||||
| “Silent” α-thalassemia | 2.7 | 2.7 | 2.4 | 2.8 |
| AUC | 0.8 | 0.6 | 0.5 | 0.9 |
| α-thalassemia trait | 2.6 | 2.6 | 2.4 | 2.6 |
| AUC | 0.9 | 0.8 | 0.8 | 0.7 |
| α-thalassemia | 2.5 | 2.6 | 2.4 | 2.6 |
| AUC | 0.7 | 0.7 | 0.6 | 0.8 |
| β-thalassemia | 3.4 | 3.3 | 3.3 | 3.3 |
| AUC | 1.0 | 1.0 | 1.0 | 1.0 |
AUC: area under the curve